resign · verb I or T /rɪˈzɑɪn/
resign
B2 to officially tell your employer that you are leaving your job
Dictionary examples:
He resigned as chairman of the committee.
Two directors have resigned from the company.
Learner example:
So Laura stepped into her boss'[s] office, wished him a Merry Christmas and resigned. (First Certificate in English; B2; German)
resign yourself to sth
C2 to make yourself accept something that you do not like because you cannot easily change it
Dictionary example:
He resigned himself to living alone.
Learner example:
Personally I wouldn't like to be at the age when you can't afford anything except bread and butter and you have to resign yourself to this miserable existence without any hope for [a] brighter future. (Certificate of Proficiency in English; C2; Polish)